Dough raiser



M. 1 KUNTz 1,816,908

DOUGH RAI SEKf Filed Apri 'an 1929 nvenlor By f/M 5W,

Patented Aug. 4, 1931l PATENT. oFFlcE MINNIE L. KUNTZ, OF WHITEFISH,MONTANA DOUGH Application filed April 17,

My present invention relates to improvements in dough raisers in whichthe invention is embodied in a closed cabinet or receptacle designed toreceive the dough. The

dough raiser is especially 'designed for domestic or household uses, andmeans are provided for heating the interior of the cabinet and formaintaining the heat at a uniform temperature in excess of that of thesurrounding atmosphere.

By the utilization of the apparatus of my invention the rising of thedough, preparatory to baking, may be governed and regu lated inforderthat the desired results may be accomplished in the bread or loaves madefrom the dough. f

In carrying out my invention I utilize a cabinet or enclosure for thedough having heat insulated walls and an inner water jacket, formaintaining the temperature during a predetermined period of time forthe rising of the dough.

The invention consists in certain novel combinations and arrangements ofparts as will hereinafter be more fully set forth. In the accompanyingdrawings I have illustrated one complete example of the physicalembodiment of my invention wherein the parts are'combined and arrangedaccording to the best mode I have thus far devised for the Y practicalapplication of the principles of my invention. l

yFigure l is a perspective view of a dough raiser embodying myinvention, parts being broken away for convenience of illustration.

Figure 2 is an enlarged detail sectional view at the line 2-2 of Figurel, in the upper right hand corner of the cabinet. Figure 3 is anenlargedvsectional detail view, as at line 3-,3 of Figure y1, illustrating thebottom portion of the cabinet and the drain device for the water jacket.

The cabinet as shown is preferably of rectangular shape and of suitablesize for the t purpose, and is fashioned withdouble walls l and 2 whichvmay be of metal. The double walls are spaced apart, and within theinner wall of the double enclosure, a third wall 3 is provided to formthe receptacle for the dough. Between the ldouble walls 1 and 2 a BAISER1929. Serial No. 355,952.

layer 4 of heat insulating material is interposed, said material beingof a fibrous nature, or of an any other suitable type of material thatwill prevent or retard the transmission of heat from the interior ofthecabinet.

Between the walls 2 and 3 a space 5 is provided for water and when theywater is heated, the heated liquid forms a water jacket for heating theinterior of the inner case 3 1n which the dough is located. A layer 6 ofthe o0 heat insulating material may also be used to form the bottom ofthe heating chamber, and to strengthen the bottom of the chamber for thesupport of the dough.

Vithin the water jacket below the bottom of the heating chamber Iprovide a number of channel plates as 7 which are supported on thebottom wall of the insulating portion ofthe cabinet, and these plates inturn support the bottom of the heating chamber. The ends of the channelplates terminate adjacent the side insulating walls to permit freecirculation of water in the lower part of the water jacket, and the sidewalls of these channel plates also have port-s 8 therein to permitlateral flow of the water through the channel plates. The water is thuspermitted to circulate throughout the water jacket to uniformlydistribute the heat, and from the water jacket the heat is transmittedthrough the metal, in- 8o l ner casing 3, to the interior of the heatingchamber.

The water may be pre-heated if desired, before lling the jacket throughthe intake nozzle 9 at the top of the cabinet, and from the nozzle thewater flows down through a bushing, or sleeve 9', in the insulated wallof the cabinet to the interior of the water space.

At the bottom of the cabinet a drain cock 10 is connected with abushingor sleeve 10, in the bottom wall of the cabinet, and the watermay readily be drained therefrom when desired, after having performedits required functions. In some instances an electric heating elementmay be introduced through the sleeve 9 when the intake nozzle isremoved, to heat the water in the jacket.

Inspection, to determine the condition of the dough, may be made fromtime to time, 10|

through a glass panel or window 11 in the top of the cabinet7 withoutnecessity for re course to opening the cabinet, and a door 12 providedwith knob 14 is hinged at 13 to give access to the interior of thecabinet'and kto the heating` chamber.

A thermometer 15 is set in the doorto indicate theVv temperature of thewater inthe heat-V ing jacket, and a timel indicator is, lshown at 16mounted on the door. The indicator is used by setting its hands7or-instance,-with' one hand to indicate the hour the dough is hand toindicate the hour Vfor removal of the risen dough. Or the hands mayindicate the time at which the dough was placedin the Vheating chamber,or in some instances the hands maybe set to indicate the time at whichthe dough is Ato rbe removed from the heating chamber. l ;r n Havingthus fully described my invention whatl: claim as new and desireitosecure by' Letters Patent is f y I A cabinetcomprising double walls anda layer of heat insulating material between them7 a spaced, interiorcasing formingV a water space betweenV the case andthe double walls,said space having an inlet and an outlet Jfor water, a transparentwindow in the top of the cabinet and a h'irngedl door at the front ofthe cabinet, and ported channel plat-esv lo.-

cated between the bottom oi the case and the bottom of the cabinet. Y iy In testimony whereof I afliX my signature.

y MINNIE L. KUNTZ. n

